using System;

public class Program

{

    public static void Main()

    {

        int n,i;

        Console.WriteLine("enter number of the triangles you want to check");

        n=Convert.ToInt32(Console.ReadLine());

        int []arra=new int[n];

        int []arrb=new int[n];

        int []arrc=new int[n];

        Console.WriteLine("enter the first lengths of the triangles");

        for(i=0;i<n;i++)

        {

            arra[i]=Convert.ToInt32(Console.ReadLine());

        }

        Console.WriteLine("enter the second lengths of the triangles");

        for(i=0;i<n;i++)

        {

            arrb[i]=Convert.ToInt32(Console.ReadLine());

        }

        Console.WriteLine("enter the third lengths of the triangles");

        for(i=0;i<n;i++)

        {

            arrc[i]=Convert.ToInt32(Console.ReadLine());

        }

        for(i=0;i<n;i++)

        {

            if(arra[i]+arrb[i]>arrc[i]&&arra[i]-arrb[i]<arrc[i])

            {

                Console.WriteLine("the  set{0} of lengths can form a triangle",i+1);

            }

            else

            {

                Console.WriteLine("triangle cannot be formed");

            }

        }

​

    }

}